Maribel Castro sews in her un-air conditioned shop, Wednesday, July 17, 2013, in Philadelphia. An excessive heat warning is again in effect for the Philadelphia region with highs expected to head up to the mid-90s (AP Photo/Matt Rourke) less

Maribel Castro sews in her un-air conditioned shop, Wednesday, July 17, 2013, in Philadelphia. An excessive heat warning is again in effect for the Philadelphia region with highs expected to head up to the ... more

Family members react as they watch investigators at the scene of a fatal accident on Roosevelt Boulevard in the Olney section of Philadelphia on Tuesday evening July 16, 2013. Philadelphia police are investigating whether cars may have been drag racing when a mother and two young sons were struck and killed attempting to cross a busy highway. The woman's two other sons ages 4 and 5 are in critical condition. (AP Photo/ Joseph Kaczmarek) less

Family members react as they watch investigators at the scene of a fatal accident on Roosevelt Boulevard in the Olney section of Philadelphia on Tuesday evening July 16, 2013. Philadelphia police are ... more

Photo: Joseph Kaczmarek, Associated Press

Family members react as they watch investigators at the scene of a... Photo-4928907.66544 - NewsTimes

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Rain drops fall on an office window as heavy rains and high winds pass over the SkyView Atlanta ferris wheel downtown, Wednesday, July 17, 2013, in Atlanta. The ferris wheel opened to the public for the first time yesterday offering riders a bird's eye view of the city during its 15-minute trips near Centennial Olympic Park. The wheel was previously in Paris and in Pensacola, Fla. (AP Photo/David Goldman) less

Rain drops fall on an office window as heavy rains and high winds pass over the SkyView Atlanta ferris wheel downtown, Wednesday, July 17, 2013, in Atlanta. The ferris wheel opened to the public for the first ... more

Photo: David Goldman, Associated Press

Rain drops fall on an office window as heavy rains and high winds... Photo-4928908.66544 - NewsTimes

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Myirale Johnson, 5, runs through a sprinkler at the Cool Spots Franklin Square location Wednesday, July 17, 2013 in Milwaukee. Cool Spots operate on days when temperatures are predicted to be 85°F or above, or when the City of Milwaukee calls a heat advisory day. Fox 6 news morning forecast is used to determine if it will be a Cool Spot day or not. (AP Photo/Milwaukee Journal Sentinel, Mark Felix) less

Myirale Johnson, 5, runs through a sprinkler at the Cool Spots Franklin Square location Wednesday, July 17, 2013 in Milwaukee. Cool Spots operate on days when temperatures are predicted to be 85°F or above, or ... more

WASHINGTON, DC - JULY 17: Declan Power Sunstein hugs his mother, Samantha Power, the nominee to be the U.S. representative to the United Nations, at the conclusion of her testimony before the Senate Foreign Relations Committee July 17, 2013 in Washington, DC. Power has received broad bipartisan support for her nomination. (Photo by Win McNamee/Getty Images) less

WASHINGTON, DC - JULY 17: Declan Power Sunstein hugs his mother, Samantha Power, the nominee to be the U.S. representative to the United Nations, at the conclusion of her testimony before the Senate Foreign ... more

DEATH VALLEY NATIONAL PARK, CA JULY 15: Double amputee Chris Moon of Great Britain runs in the AdventurCORPS Badwater 135 ultra-marathon race on July 15, 2013 in Death Valley National Park, California. Billed as the toughest footrace in the world, the 36th annual Badwater 135 starts at Badwater Basin in Death Valley, 280 feet below sea level, where athletes begin a 135-mile non-stop run over three mountain ranges in extreme mid-summer desert heat to finish at 8,350-foot near Mount Whitney for a total cumulative vertical ascent of 13,000 feet. July 10 marked the 100-year anniversary of the all-time hottest world record temperature of 134 degrees, set in Death Valley where the average high in July is 116. A total of 96 competitors from 22 nations are attempting the run which equals about five back-to-back marathons. Previous winners have completed all 135 miles in slightly less than 24 hours. (Photo by David McNew/Getty Images) less

DEATH VALLEY NATIONAL PARK, CA JULY 15: Double amputee Chris Moon of Great Britain runs in the AdventurCORPS Badwater 135 ultra-marathon race on July 15, 2013 in Death Valley National Park, California. Billed ... more

Kalisa Myers, 31, chants her slogans during a demonstration in reaction to the acquittal of neighborhood watch volunteer George Zimmerman on Wednesday, July 17, 2013, in Beverly Hills, Calif. (AP Photo/Jae C. Hong) less

Kalisa Myers, 31, chants her slogans during a demonstration in reaction to the acquittal of neighborhood watch volunteer George Zimmerman on Wednesday, July 17, 2013, in Beverly Hills, Calif. (AP Photo/Jae C. ... more

Teenage Ninja Turtle characters walk through the San Diego Convention Center during the Preview Night event on Day 1 of the 2013 Comic-Con International Convention on Wednesday, July 17, 2013, in San Diego. (Photo by Denis Poroy/Invision/AP) less

Teenage Ninja Turtle characters walk through the San Diego Convention Center during the Preview Night event on Day 1 of the 2013 Comic-Con International Convention on Wednesday, July 17, 2013, in San Diego. ... more

7-year-old Michael Pruitt and 11-year-old Kayla Spears, both of Watervliet, Mich. have distinctly different reactions to the ride down on the Mega Shot at the Van Buren County Youth Fair in Lawrence, Mich. on Wednesday July 17, 2013. (AP Photo/The Herald Palladium, Joe Rondone) less

7-year-old Michael Pruitt and 11-year-old Kayla Spears, both of Watervliet, Mich. have distinctly different reactions to the ride down on the Mega Shot at the Van Buren County Youth Fair in Lawrence, Mich. on ... more

Firefighters pour water Wednesday afternoon July 17, 2013, on a building that was completely destroyed by fire at Midwest Biodiesel Products, LLC located at 7350 State Route 111 in South Roxana, Ill. Heavy smoke was visible as far away as Alton, Ill., as firefighters from the Illinois communities of South Roxana, Roxana, Hartford, Wood River, Mitchell and Edwardsville were called to the scene. Despite the effort the building was on the ground and destroyed within minutes. (AP Photo/The Telegraph, John Badman) less

Firefighters pour water Wednesday afternoon July 17, 2013, on a building that was completely destroyed by fire at Midwest Biodiesel Products, LLC located at 7350 State Route 111 in South Roxana, Ill. Heavy ... more

Members of the Pueblo Police Department swat team point their weapons at wanted fugitive, Ray D. Gonzales in a window of an apartment in the Sangre de Cristo Apartments Tuesday afternoon July 16, 2013 in Pueblo, Colo. Gonzales surrendered after he talked to police from a second-story window while police kept their weapons aimed at him. (AP Photo/The Pueblo Chieftain, Bryan Kelsen) less

Members of the Pueblo Police Department swat team point their weapons at wanted fugitive, Ray D. Gonzales in a window of an apartment in the Sangre de Cristo Apartments Tuesday afternoon July 16, 2013 in ... more

Photo: Bryan Kelsen, Associated Press

Members of the Pueblo Police Department swat team point their... Photo-4928923.66544 - NewsTimes